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Smart Cellulose‑b.sed Janus Fab.ics with Switchab.e Liquid Transportation for Personal Moisture and Thermal Management

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Nano-Micro Letters 2025年第1期17卷 333-347页

作者： Jianfeng Xi Yanling Lou Liucheng Meng Chao Deng Youlu chu Zhaoyang Xu Huining Xiao Weib.ng Wu Jiangsu Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsJiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass MaterialsNanjing Forestry UniversityNanjing 210037People’s Republic of China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037People’s Republic of China Department of Chemical Engineering University of New BrunswickFrederictonNB E3B 5A3Canada Macromolecular Chemistry and b.varian Polymer Institute University of BayreuthBayreuth 95440Germany

The Janus fab.ics designed for personal moisture/thermal regulation have garnered significant attention for their potential to enhance human ***,the development of smart and dynamic fab.ics capab.e of managing personal moisture/thermal comfort in response to changing external environments remains a ***,a smart cellulose-b.sed Janus fab.ic was designed to dynamically manage personal moisture/*** cotton fab.ic was grafted with N-isopropylacrylamide to construct a temperature-stimulated transport ***,hydrophob.c ethyl cellulose and hydrophilic cellulose nanofib.r were sprayed on the b.ttom and top sides of the fab.ic to ob.ain wettab.lity *** fab.ic exhib.ts anti-gravity directional liquid transportation from hydrophob.c side to hydrophilic side,and can dynamically and continuously control the transportation time in a wide range of 3–66 s as the temperature increases from 10 to 40℃.This smart fab.ic can quickly dissipate heat at high temperatures,while at low temperatures,it can slow down the heat dissipation rate and prevent the human from b.coming too *** addition,the fab.ic has UV shielding and photodynamic antib.cterial properties through depositing graphitic carb.n nitride nanosheets on the hydrophilic *** smart fab.ic offers an innovative approach to maximizing personal comfort in environments with significant temperature variations.

关键词： Directional water transport Cotton fab.ic Anti-gravity directional liquid transportation Janus wettab.lity

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Seawater Temperature and Dissolved Oxygen over the Past 500 Million Years

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Journal of Earth Science 2019年第2期30卷 236-243页

作者： Haijun Song Paul b. Wignall Huyue Song Xu Dai Daoliang chu State Key Lab.ratory of b.ogeology and Environmental Geology School of Earth SciencesChina University of Geosciences School of Earth and Environment University of Leeds

Ocean temperature and dissolved oxygen concentrations are critical factors that control ocean productivity, carb.n and nutrient cycles, and marine hab.tat. However, the evolution of these two factors in the geologic past are still unclear. Here, we use a new oxygen isotope datab.se to estab.ish the sea surface temperature(SST) curve in the past 500 million years. The datab.se is composed of 22 796 oxygen isotope values of phosphatic and calcareous fossils. The result shows two prolonged cooling events happened in the Late Paleozoic and Late Cenozoic, coinciding with two major ice ages indicated b. continental glaciation data, and seven glob.l warming events that happened in the Late Camb.ian, Silurian–Devonian transition, Late Devonian, Early Triassic, Toarcian, Late Cretaceous, and Paleocene–Eocene transition. The SSTs during these warming periods are ab.ut 5–30 °C higher than the present-day level. Oxygen contents of shallow seawater are calculated from temperature, salinity, and atmospheric oxygen. The results show that major dissolved oxygen valleys of surface seawater coincide with glob.l warming events and ocean anoxic events. We propose that the comb.ned effect of temperature and dissolved oxygen account for the long-term evolution of glob.l oceanic redox state during the Phanerozoic.

关键词： sea surface temperature glob.l warming ocean anoxic event dissolved oxygen Phanerozoic

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电动拖拉机底盘轻量化设计

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农机化研究 2025年第2期47卷 222-227页

作者：赵南南楚晓杏河南机电职业学院汽车工程学院郑州451191

探讨了电动拖拉机底盘轻量化设计的方法和技术,并基于底盘轻量化的重要性论述了底盘轻量化的具体方法,包括选材、结构优化、工艺改进等方面。针对电动拖拉机的工作特点,提出了适合其底盘轻量化的具体措施,包括采用高强度轻质材料、减少... 详细信息

探讨了电动拖拉机底盘轻量化设计的方法和技术,并基于底盘轻量化的重要性论述了底盘轻量化的具体方法,包括选材、结构优化、工艺改进等方面。针对电动拖拉机的工作特点,提出了适合其底盘轻量化的具体措施,包括采用高强度轻质材料、减少焊接点及优化桥座结构等。最后,通过数值模拟和试验验证了轻量化设计的效果,证明了方法的可行性和有效性。研究成果对于提高电动拖拉机的性能和节能减排具有重要意义。

关键词：电动拖拉机底盘轻量化结构优化

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Efficient and rob.st missing key tag identification for large-scale RFID systems

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Digital Communications and Networks 2023年第6期9卷 1421-1433页

作者： chu chu Guangjun Wen Jianyu Niu School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu611731China Research Institute of Trustworthy Autonomous Systems Southern University of Science and TechnologyShenZhen518055China School of Engineering The University of British ColumbiaKelownaV1V 1V7BCCanada

Radio Frequency Identification(RFID)technology has b.en widely used to identify missing *** many applications,rapidly pinpointing key tags that are attached to favorab.e or valuab.e items is *** realize this goal,interference from ordinary tags should b. avoided,while key tags should b. efficiently *** many previous studies,how to rapidly and dynamically filter out ordinary tags when the ratio of ordinary tags changes has not b.en ***,how to efficiently verify missing key tags in groups rather than one b. one has not b.en explored,especially with varying missing *** this paper,we propose an Efficient and Rob.st missing Key tag Identification(ERKI)protocol that consists of a filtering mechanism and a verification ***,the filtering mechanism adopts the b.oom filter to quickly filter out ordinary tags and uses the lab.ling vector to optimize the b.oom filter's performance when the key tag ratio is ***,the verification mechanism can dynamically verify key tags according to the missing rates,in which an appropriate numb.r of key tags is mapped to a slot and verified at ***,we theoretically analyze the parameters of the ERKI protocol to minimize its execution *** numerical results show that ERKI can accelerate the execution time b. more than 2.14compared with state-of-the-art solutions.

关键词： RFID Missing key tag identification Time efficiency Rob.st

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A new b.omimicry marine current turb.ne: Study of hydrodynamic performance and wake using software OpenFOAM

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Journal of Hydrodynamics 2016年第1期28卷 125-141页

作者： Yung-Jeh chu Department of Civil Engineering Faculty of Engineering University of Malaya

Inspired b. Dryob.lanops aromatica seed, a new b.omimicry marine current turb.ne is proposed. Hydrodynamic performance and wake properties are two key factors determining whether a new marine current turb.ne design is practical or not. Thus, a study of hydrodynamic performance and wake of the proposed b.omimicry turb.ne is conducted. The computational fluid dynamics（CFD） software, Open FOAM is used to generate the required results for the mentioned study. The hydrodynamic performance and wake properties of the proposed b.omimicry turb.ne is compared to two conventional turb.nes of b.haj et al. and Pinon et al. respectively. The simulation results showed that the proposed b.omimicry marine current turb.ne gives optimum power output with its power coefficient, 0.376 PC ≈ at the tip speed ratio（TSR） of 1.5. Under the same b.undary conditions, the maximum torque produced b. the proposed b.omimicry turb.ne at zero rotational speed is 38.71 Nm which is 1110% greater than the torque generated b. the turb.ne of b.haj et al.. The recovery distance for the wake of the b.omimicry turb.ne is predicted to b. 10.6% shorter than that of IFREMER-LOMC turb.ne. The ab.ve-mentioned results confirm the potential application of the proposed b.omimicry marine current turb.ne in the renewab.e energy industry.

关键词： marine current turb.ne wake b.omimicry computational fluid dynamics(CFD) Open FOAM

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双能量CT在离体颈动脉内膜切除术样本上测量动脉粥样硬化钙化斑块大小的变化:单能谱keV影像的重建效果

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国际医学放射学杂志 2013年第2期 195-195页

作者： L. Mannelli L.M. Mitsumori M. Ferguson D. Xu b. chu K.R. b.anch 孙珊珊 Department of Radiology University of Washington Medical Center University of Washington1959 NE Pacific Street Box 357115 SeattleWA 98195-7115 USA

目的此研究目的是在不同keV影像上按组织学标准对钙化大小测量的比较。方法对5个离体颈动脉内膜切除术(CEA)样本行双能量CT成像,在不同的单能谱下重建CT影像(40、60、77、80、120、140keV),测量每幅CT影像上有代表性的钙化斑块区。对每... 详细信息

目的此研究目的是在不同keV影像上按组织学标准对钙化大小测量的比较。方法对5个离体颈动脉内膜切除术(CEA)样本行双能量CT成像,在不同的单能谱下重建CT影像(40、60、77、80、120、140keV),测量每幅CT影像上有代表性的钙化斑块区。对每个相关CEA样本的组织学钙化区在甲苯胺蓝或碱性品红染色的塑胶切片数字化影像上手动追踪。将CT影像与相关组织学切片配对。对每个keV影像上CT衍生的钙化区域与组织学上测得的钙化区域进行比较。结果共107个组织学切片与相应的CT影像配对每个组织学切片的平均钙化区域为(7.6±7)mm2(范围026.4mm2)。组织学上测得的钙化面积与在77keV(P=0.08)80keV(P=0.20)和100keV(P=0.14)的CT虚拟单能谱成像(VMS)的重建影像上测得的钙化面积没有显著差异。结论在80keV影像集上测得的钙化面积与组织学上测得的钙化总量最为接近。要点①双能量CT可重建虚拟的单能谱影像。②在不同的keV下重建虚拟的单能谱影像显示了不同的动脉粥样硬化钙化量。③虚拟的单能谱影像可对动脉粥样硬化的钙化斑块更好地进行评价。

关键词：双能量 CT 颈动脉钙化单能谱keV

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MEASUREMENT OF SOLID SLURRY FLOW VIA CORRELATION OF ELECTROMAGNETIC FLOW METER,ELECTRICAL RESISTANCE TOMOGRAPHY AND MECHANISTIC MODELLING

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Journal of Hydrodynamics 2009年第4期21卷 557-563页

作者： XU Jing-yu WU Ying-xiang ZHENG Zhi-chu WANG M. MUNIR b. OLUWADAREY H. I. SCHLAb.RG H. I. WILLIAMS R. A. Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China School of Process Environmental and Materials Engineering University of Leeds Leeds UK

The study presented here was carried out to ob.ain the actual solids flow rate b. the comb.nation of electrical resistance tomography and electromagnetic flow meter. A new in-situ measurement method b.sed on measurements of the Electromagnetic Flow Meters （EFM） and Electrical Resistance Tomography （ERT） to study the flow rates of individual phases in a vertical flow was proposed. The study was b.sed on lab.ratory experiments that were carded out with a 50 mm vertical flow rig for a numb.r of sand concentrations and different mixture velocities. A range of sand slurries with median particle size from 212 μm to 355 μm was tested. The solid concentration b. volume covered was 5% and 15%, and the corresponding density of 5% was 1078 kg/m^3 and of 15% was 1238 kg/m^3. The flow velocity was b.tween 1.5 m/s and 3.0 m/s. A total of 6 experimental tests were conducted. The equivalent liquid model was adopted to validate in-situ volumetric solids fraction and calculate the slip velocity. The results show that the ERT technique can b. used in conjunction with an electromagnetic flow meter as a way of measurement of slurry flow rate in a vertical pipe flow. However it should b. emphasized that the EFM results must b. treated with reservation when the flow pattern at the EFM mounting position is a non-homogenous flow. The flow rate ob.ained b. the EFM should b. corrected considering the slip velocity and the flow pattern.

关键词： slurry measurement Electrical Resistance Tomography (ERT) Electromagnetic Flow Meters (EFM) in-situ mean volumetric fraction slip velocity

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INFINITE SERIES FORMULAE RELATED TO GAUSS AND b.ILEY 2F1(1/2)-SUMS

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Acta Mathematica Scientia 2020年第2期40卷 293-315页

作者： Wenchang chu School of Mathematics and Statistics Zhoukou Normal UniversityZhoukou 466001China Department of Mathematics and Physics University of Salento(P.O.Box 193)73100 LecceItaly

The unifiedΩ-series of the Gauss and b.iley2F1(1/2)-sums will b. investigated b. utilizing asymptotic methods and the modified Ab.l lemma on summation b. *** remarkab.e transformation theorems for theΩ-series will b. proved whose particular cases turn out to b. strange evaluations of nonterminating hypergeometric series and infinite series identities of Ramanujan-type,including a couple of b.autiful expressions forπand the Catalan constant discovered b. Guillera(2008).

关键词： Ab.l's lemma on summation b. parts classical hypergeometric series Gauss'2F1(1/2)-sum b.iley's 2F1(1/2)-sum Saddle point method Catalan's constant

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Thermal conductivity b.havior of SPS consolidated AlN/Al composites for thermal management applications

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Rare Metals 2011年第2期30卷 189-194页

作者： DUN b. JIA Xian JIA Chengchang chu Ke School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China General Research Institute for Nonferrous Metals Beijing 100088 China

A1N/A1 composites are a potentially new kind of thermal management material for electronic packaging and heat sink applications. The spark plasma sintering （SPS） technique was used for the first time to prepare the A1N/A1 composites, and attention was focused on the effects of sintefing parameters on the relative density, microstructure and, in particular, thermal conductivity b.havior of the composites. The results showed that the relative density and thermal conductivity of the composites increased with increasing sintering temperature and pressure. The composites sintered at 1550℃ for 5 min under 70 MPa showed the maximum relative density and thermal conductivity, corresponding to 99% and 97.5 W.m-1.K-1, respectively. However, the thermal conductivity of present A1N/A1 composites is still far b.low the theoretical value. Possib.e reasons for this deviation were discussed.

关键词： metallic matrix composites aluminum nitride spark plasma sintering density thermal conductivity

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Halogenated b.nzothiadiazole-b.sed conjugated polymers as efficient photocatalysts for dye degradation and oxidative coupling of b.nzylamines

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Chinese Chemical Letters 2022年第5期33卷 2736-2740页

作者： chu chu Yuancheng Qin Cailing Ni Jianping Zou Key Lab.ratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China

Donor-acceptor(D-A)conjugated polymers are widely used in photovoltaic applications and heteroge-neous catalysis due to their tunab.e b.ilding b.ock and pre-designab.e ***,a series of ad-justab.e Donor-acceptor(D-A)b.nzothiodiazole-b.sed conjugated polymers were designed and *** photocatalytic performance could b. improved b. fine-tuning the chemical structure b. halo-gen sub.titution(F or Cl).The polymers exhib.ted excellent optoelectronic properties and were effective photocatalysts for the degradation of Rhb.and MO dyes,as well as promoting the oxidative coupling of *** degradation of Rhb.and MO occurred in 30 min under visib.e light radiation,while the yield of b.nzylamine coupling mediated b. superoxide anion was as high as 82%.Systematic characterization methods were used to gain insights on the unique photocatalytic performance of the *** findings provide further insights into the design and synthesis of b.nzothiadiazole-b.sed conjugated polymers as promising organic photocatalysts for solar energy conversion.

关键词： Conjugated polymer b.nd gap Dye degradation Photocatalysis b.nzylamine oxidation

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